Idk what to do :/

So basically my mom treats me unfairly. I am the oldest sibling so maybe that’s why? She would take our her anger on me first, she would yell at me and slam my stuff. When she’s mad at me she stays mad and ignores me for at least 1 week. When she gets mad at my brother it only lasts for 1 hour -_-. She gets mad at me for stupid reasons. I would ask her a question and she would give me a answer, I would ask her a question again then she gets mad at me and yells at me. My brother would hit her and she would just laugh it off. If I did that she would tattle tail on me. She even once told me “why did i give birth to you?” That really hurt a lot. I told my dad about her treating unfair and he said “yeah it’s really not fair”. I ask her yesterday why she always gets mad at me and she said that I have a bad temper. I’ll admit I can be like that, but when someone pisses me off. But I’ll be honest, her temper is worst than mine. Today I didn’t even do anything I only texted her and said “can you drive me to uncles house”? Then she called me and yelled at me and said “WHAT DO YOU WANT” I repeated what I said and she yelled at me again. I ended the call because I hated that she was screaming at me. She then called again, I told my brother to answer it since she would scream at me again. And guess what? She didn’t yell at my brother but yelled at me. I am very emotional so my eyes started to water I tried holding back my tears because I didn’t want my brother seeing me cry. I cry every night thinking about how she treats me unfairly. I called her dumb, I know that’s disrespectful but I’m immature and still growing. She’s a full grown ADULT. When the thought of me going to college or becoming a adult it makes me happy because then I can get away from her. She spends money like money is paper. My dad is to good for my mom. I wish she would realize her mistakes, even I realize what things I do wrong and I apologize. Never once have I ever heard the word “sorry” out of her mouth to me.